Isothermal decomposition kinetics in the Cu-9%Al-4%Ag alloy

被引：24

作者：

Adorno, AT ^{[1
]}

Silva, RAG ^{[1
]}

机构：

[1] UNESP, Inst Quim, Dept Quim Fis, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2004年 / 375卷 / 1-2期

关键词：

metals; precipitation; x-ray diffraction;

D O I：

10.1016/j.jallcom.2003.11.158

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of 4 wt.%Ag addition on the isothermal decomposition kinetics of the beta' phase in the Cu-9wt.%Al alloy was studied by microhardness measurements, optical and scanning electron microscopy (SEM), energy dispersive X-ray (EDX) analysis, and X-ray diffractometry. The results showed that the presence of Ag decreases the beta' --> (alpha + gamma(1)) decomposition reaction rate in the Cu-9%Al-4%Ag alloy, an effect that may be associated to the gamma(1) phase which catalyses the Ag precipitation, making it faster than the decomposition reaction, and thus, stabilizing the martensitic phase. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：128 / 133

页数：6

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